Improvement in processes of making partly-transparent letters



I. HOLTHAUSEN. Process of Making Partly Transparent Letters.

Patented Oct. 21, I879.

UNITED STATES'PA ENT OFFICE.

FREDERIG HOLTHAUSEN, OF NEW YORK, N. Y.

IMPROVEMENT'IN FRJCESSES OF MAKING PART LY-TRANSPARENT LETTERS.

Specification forming part of Letters Patent No. 220,904, dated October21, 1879; application filed June 16, 1879.

To all whom it may concern:

Be it known that I,'Fnnnnn1o HOLTHAU- saw, of New York, in the countyand State of New York, have invented a new and Improved Process ofMaking PartlyTransparent Letters, of which the following is aspecification.

This invention has for its object to economize labor and material in themanufacture of shaded transparent letters and characters to be appliedto windows and other places.

The invention consists in cutting, from a piece of gold-paper or othermaterial, by two simultaneous incisions and at one operation, theoutline of the body, and also the outline of theborder or shadedportion, of a letter, and in applying the two pieces thus obtained totwo different sheets of mica or other mate rial, in such manner that inone sheet the mica forms the body of the letter and the gold-paper theshaded part thereof, while in the other piece the gold-paper willconstitute the body and the mica the shaded part of the letter, as willbe hereinafter more fully described.

In the accompanying drawings, Figure 1 represents a face view of a pieceof gold-paper or other material from which the letter is to be cut. Fig.2 is a similar view, showing the two incisions in the gold-paper. Fig. 3shows the gold-paper and the body of the letter applied to a piece ofmica. Fig. 4 is a similar view, showing said piece of mica cut to therequisite shape. Fig. 5 is a face View of the letter formed by placingthe shade portion of the gold letter on a piece of mica; and Fig. 6 is alongitudinal transverse section on the line 70 70, Fig. 5.

Similar letters of reference indicate corresponding parts in all thefigures.

The letter A represents a sheet of gold-paper "or other material fromwhich a letter or character is to be "out. It is of suitable form andsize. Into this piece A, I make two incisions of the shape of the letteror character desired, and of its shaded part. In the drawings I haveshown the letter V to be thus formed; but it is evident that any otherletter or character may be made in equal manner. By the two incisions Iobtain three pieces, a, b, and c. The piece a forms the body of theletter. '1) is the shaded part of a letter shaped like the body a, and cthe remaining ground-piece. I now take two pieces of mica or equivalentsubstance, 61 and 0. Upon the face of one piece, 07, I gum first theground-piece c of the gold-paper, and within the opening of suchground-piece I affix upon the mica the body portion a, cut out asheretofore specified. Between the inner edge of the piece 0 and the bodya, a space is left, (corresponding in size to the piece 1),) which isformed of the mica d. I now out the piece 0 and the mica down to theoutline of the letter desired, as shown in Fig. 4..

It will be seen that the letter thus formed is made of'gold-paper, whilethe shading is of mica, which may be suitably tinted.

Upon the other sheet, 0, of mica I gum the shade portion 1), cut out asabove described, and then I cut the sheet of mica down to the exact sizeof the piece I). A letter will now be formed whose body is formed ofmica, while its shaded portion is formed of gold-pa- )er. I The twoletters, made as above described, are readily manufactured, and requirebut a small quantity of material.

It will be perceived that by my invention I produce two letters, ofwhich one may be termed positive, being formed by the body a. of thegold-paper, and the other negative, its form being suggested by theinner edge of the piece I).

The two letters do not require more material for their production, asregards the goldpaper, than one alone would require.

I claim- The process herein described of making the body and shadedportions of letters, which consists in first cutting the pieces a, b,and c from a piece of gold-paper or other material by two simultaneousincisions, and then using the pieces a and c for one letter and thepiece I) for another letter, substantially as specified.

FR. HOLTHAUSEN. Witnesses:

F. v. BRIEsEN, T. B. MOSHER.

